How to make the onchange function in OpenERP(Odoo) ?

In onchange function first we have to go in .py file (python file)

After that we have to decide where you want to give onchange function and then give attribute on_change to that field.

Like below python code in py file :

1. def onchange_function(self, cr, uid,ids,qualification, context=None):
2.       print"=====qualification======",qualification
3.       if qualification=='a1':
4.           a1 = 'Shiva1'
5.       elif qualification=='a2':
6.           a2 = 'Shiva2'
7.       else:
8.           a3 = 'shiva3'
9.       print"=====a1====",a1
10.       obj = self.pool.get('hr.role1').search(cr ,uid ,[('name','=',a1)])
11.       print"=====obj====",obj
12.       a2 = self.pool.get('hr.role1').browse(cr, uid, obj, context)
13.       for val in a2:
14.           print"=====a2====",val,val.id
15. 
    
16.           values = {
17. 
    

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